ul,li,body{
    padding: 0;
    margin: 0;
}
ul{
    list-style-type: none;
}
h1{
    font-family: "微软雅黑";
    font-weight: normal;
    text-align: center;
    height: 49px;
    box-shadow: 0 2px 3px #000;
}
.item{
    float: left;
    width: 20%;
    text-align: center;
}
.item img{
    margin-top: 5px;
    margin-bottom: 5px; 
}
.urls{
    border-bottom: 1px solid #ccc;
}
.url{
    float: left;
    width: 20%;
    text-align: center;
    height: 45px;
    line-height: 45px;
}
.url.sort a{
    color: #aaa;
}
.url a{
    color: #000;
    text-decoration: none;
}
.footer-nav{
    background-color: #333;
    height: 32px;
}
.footer-nav ul li{
    float: left;
    color: #fff;
    text-align: center;
    line-height: 32px;
    height: 32px;
    width: 100px;
}
.footer-nav ul{
    margin-left: 32%;
}
p{
    text-align: center;
}
